Do you think your better half is deceiving you? Are there a bunch of calls to one number on his/her cell or bill? It's human nature to want the truth. Sometimes ascertaining the fact can be trying. Particularly if all you have to go on is an unfamiliar number in your partner's phone. A reverse cell lookup might help.
Is it just a bosom buddy? Or something more?. . . Don't hope they will come out and say "yes, I am deceiving on you." You have to have corroboration to give you a place to stand on. How do you find out who it is without trying the number and showing your hand? You could enlist a detective - but at what cost? A reverse phone directory can assist.
Did you looked at a Reverse Cell Lookup?
Did you try out one of the gratis services on the internet and get poor results? Gratis directories don't work because they only give the most basic information. The honest reputable paid directories give you entree to info that will make it evident who is on the other end of that cell.
What does it produce?
A good service can yield a bonanza of information. Not only can you find the owners name but a magnitude of info including:
Owners name and present address
Mobile or landline
Which phone provider
Additional numbers connected with the holder
Earlier addresses or even if they have diverse addresses
Equipped with this information you can form quite good picture of what's occurring. When you confront your mate they will have no choice but acknowledge to everything.